5683-79-4Relevant academic research and scientific papers
PROCESSES FOR PRODUCING HEXAMETHYLENEDIAMINE (HMD), ADIPONITRILE (ADN), ADIPAMIDE (ADM) AND DERIVATIVES THEREOF
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Page/Page column 16, (2012/01/06)
Processes for producing nitrogen containing compounds include producing hexamethylenediamine (HMD), adiponitrile (ADN), adipamide (ADM) and derivatives thereof from adipic acid (AA) obtained from fermentation broths containing diammonium adipate (DAA) or monoammonium adipate (MAA).
Processes for producing monoammonium adipate from fermentation broths containing diammonium adipate, monoammonium adipate and/or adipic acid, and conversion of monoammonium adipate to adipic acid
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Page/Page column 10, (2011/11/12)
A process for making MAA from a clarified DAA-containing fermentation broth includes (a) distilling the broth to form an overhead that includes water and ammonia, and a liquid bottoms that includes MAA, at least some DAA, and at least about 20 wt% water; (b) cooling the bottoms to a temperature sufficient to cause the bottoms to separate into a DAA-containing liquid portion in contact with a MAA-containing solid portion that is substantially free of DAA; (c) separating the solid portion from the liquid portion; and (d) recovering the solid portion.
PROCESSES FOR PRODUCING HEXAMETHYLENEDIAMINE (HMD), ADIPONITRILE (ADN), ADIPAMIDE (ADM) AND DERIVATIVES THEREOF
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Page/Page column 19, (2012/01/06)
Processes include producing hexamethylenediamine (HMD), adiponitrile (ADN), adipamide (ADM) and derivatives thereof from fermentation broths containing diammonium adipate (DAA) monoammonium adipate (MAA) and/or adipic acid (AA).
PROCESSES FOR PRODUCING ADIPIC ACID FROM FERMENTATION BROTHS CONTAINING DIAMMONIUM ADIPATE
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Page/Page column 5, (2011/11/12)
Processes for making AA from either a clarified DAA-containing fermentation broth or a clarified MAA-containing fermentation broth that include distilling the broth under super atmospheric pressure at a temperature of >100° C. to about 300° C. to form an overhead that comprises water and ammonia, and a liquid bottoms that includes AA, and at least about 20 wt % water; cooling the bottoms to a temperature sufficient to cause the bottoms to separate into a liquid portion and a solid portion that is substantially pure AA; and separating the solid portion from the liquid portion. A method also reduces the broth distillation temperature and pressure by adding an ammonia separating and/or water azeotroping solvent to the broth.
PROCESSES FOR PRODUCING MONOAMMONIUM ADIPATE FROM FERMENTATION BROTHS CONTAINING DIAMMONIUM ADIPATE, MONOAMMONIUM ADIPATE AND/OR ADIPIC ACID, AND CONVERSION OF MONOAMMONIUM ADIPATE TO ADIPIC ACID
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Page/Page column 17-18, (2011/11/13)
A process for making MAA from a clarified DAA-containmg fefme.ntation broth includes (a) distilling: the broth to form an overhead thai includes water and ammonia, and a liquid bottoms, that includes MAA, at least some DAA, and at least about 20 wt% water; (fa) cooling "the bottoms to a temperature sufficient to cause the bottoms to separate into a DAA-containing liquid portion in contact with a MAA-contaraing solid portion that is substantially free of DAA; (c) separating the solid portion from the liquid portion: and (d) recovering the solid portion.
CRYSTAL STRUCTURE AND THERMAL STABILITY OF AMMONIUM ADIPATE (NH4)2C6H8O4
Teslya, I. A.,Tursina, A. I.,Iskhakova, L. D.,Avdonina, L. M.,Marugin, V. V.
, p. 956 - 960 (2007/10/02)
An x-ray structural investigation of ammonium adipate (NH4)2AD has been carried out (CAD-4, λMo, R=0.041, Rw=0.038, 938 reflections).The parameters of the monoclinic cell are: a=6.150(1), b=8.897(1), c=8.690(1) Angstroem, β=98.21(1) deg, Z=2, space group P21/c.The dependence of the geometry of the adipate ion on the character of the hydrogen bond and on the size and coordination environment of the cation has been examined.The influence of H bonds on the packing of the molecules in the structure has been analyzed.A thermographic investigation of the compound has been carried out, and the parameters of the model of the kinetic equation of the decomposition step to NH4HAD have been found.
